vtkOSPRayVolumeMapperNode.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkOSPRayVolumeMapperNode.h
 
  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
 
     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.
 
=========================================================================*/
#ifndef vtkOSPRayVolumeMapperNode_h
#define vtkOSPRayVolumeMapperNode_h
 
#include "vtkOSPRayCache.h"               // For common cache infrastructure
#include "vtkRenderingRayTracingModule.h" // For export macro
#include "vtkVolumeMapperNode.h"
 
#include "RTWrapper/RTWrapper.h" // for handle types
 
class vtkDataArray;
class vtkDataSet;
class vtkVolume;
 
class VTKRENDERINGRAYTRACING_EXPORT vtkOSPRayVolumeMapperNode : public vtkVolumeMapperNode
{
public:
  static vtkOSPRayVolumeMapperNode* New();
  vtkTypeMacro(vtkOSPRayVolumeMapperNode, vtkVolumeMapperNode);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  void Render(bool prepass) override;
 
  void SetSamplingRate(double rate) { this->SamplingRate = rate; }
  double GetSamplingRate() { return this->SamplingRate; }
 
protected:
  vtkOSPRayVolumeMapperNode();
  ~vtkOSPRayVolumeMapperNode() override;
 
  void UpdateTransferFunction(RTW::Backend* be, vtkVolume* vol, double* dataRange = nullptr);
 
  // TODO: SetAndGetters?
  int NumColors;
  double SamplingRate;
  double SamplingStep; // base sampling step of each voxel
 
  vtkTimeStamp BuildTime;
  vtkTimeStamp PropertyTime;
  vtkDataArray* LastArray;
  int LastComponent;
 
  OSPVolume OSPRayVolume;
  OSPVolumetricModel OSPRayVolumeModel;
  OSPGeometricModel Cropper;
  OSPTransferFunction TransferFunction;
  OSPInstance OSPRayInstance;
 
  std::vector<float> TFVals;
  std::vector<float> TFOVals;
 
  vtkOSPRayCache<vtkOSPRayCacheItemObject>* Cache;
 
private:
  vtkOSPRayVolumeMapperNode(const vtkOSPRayVolumeMapperNode&) = delete;
  void operator=(const vtkOSPRayVolumeMapperNode&) = delete;
};
#endif